Messages in this thread | | | From | "Dennis Cook" <> | Subject | Re: Deactivating TCP checksumming | Date | Wed, 2 Apr 2003 15:47:35 -0500 |
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What I was looking for is a general capability to keep the SW transport stack from computing outgoing TCP/UDP/IP checksums so that the HW can be allowed to do it, similar to Windows checksum offload capability.
"Jeff Garzik" <jgarzik@pobox.com> wrote in message news:20030402203653.GA2503@gtf.org... > On Wed, Apr 02, 2003 at 02:22:59PM -0500, Dennis Cook wrote: > > Using RH Linux kernel 2.4.18, setting "features" bit NETIF_F_IP_CSUM does > > not appear > > to keep a valid IP checksum from being computed in packets presented to my > > driver > > for transmission. So having HW compute outgoing checksum buys nothing. > > You are not using sendfile(2), which is required to activate h/w csum. > > Jeff > > >
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